let num: number = 10;
let bool: boolean = true;
let str: string = "hello world";
let arr: number[] = [1, 2, 3, 4, 5];
let arr2: Array<number | string | boolean> = [1, "hello", true];
type Person = string | number | boolean;
let person: Person = "hello world";
interface Person1 {
  name: string;
  age: number;
}
let person1: Person1 = {
  name: "name",
  age: 25,
};